2491909703131 has 8 divisors (see below), whose sum is σ = 2501498191104. Its totient is φ = 2482322075880.

The previous prime is 2491909703089. The next prime is 2491909703159. The reversal of 2491909703131 is 1313079091942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2491909703131 is a prime.

It is a super-3 number, since 3×2491909703131³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491909703161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5922130 + ... + 6328936.

It is an arithmetic number, because the mean of its divisors is an integer number (312687273888).

Almost surely, 2^{2491909703131} is an apocalyptic number.

2491909703131 is a deficient number, since it is larger than the sum of its proper divisors (9588487973).

2491909703131 is a wasteful number, since it uses less digits than its factorization.

2491909703131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430361.

The product of its (nonzero) digits is 367416, while the sum is 49.

The spelling of 2491909703131 in words is "two trillion, four hundred ninety-one billion, nine hundred nine million, seven hundred three thousand, one hundred thirty-one".